“INFLUENCE OF COMPONENTS (UV + VIS) OF SOLAR RADIATION ON THE COLOR CHANGE OF UNSTEAMED AND STEAMED BEECH WOOD”. Innovation in Woodworking Industry and Engineering design 11, no. 2 (January 30, 2026). Accessed February 25, 2026. http://innojs.ltu.bg/index.php/scjournal-inno/article/view/287.